#!/bin/sh

set -e

. /usr/share/debconf/confmodule

#set -x
#echo "bareos-database-common.config: $@" >&2

if [ -r @scriptdir@/bareos-config-lib.sh ]; then
    . @scriptdir@/bareos-config-lib.sh
    if [ -f /usr/share/dbconfig-common/dpkg/config ]; then
        . /usr/share/dbconfig-common/dpkg/config

        dbc_debug=1
        # prevent errors by using || true
        dbc_dbname=`get_database_name bareos` || true
        dbc_dbuser=`get_database_user bareos` || true

        # only required for sqlite3
        dbc_basepath=`get_working_dir`

        # convert Bareos databases types into dbconfig_dbtypes
        dbc_dbtypes=""
        DB_INSTALLED=`get_databases_installed`
        if echo "$DB_INSTALLED" | grep -q postgresql; then dbc_dbtypes="${dbc_dbtypes}pgsql, "; fi
        if echo "$DB_INSTALLED" | grep -q mysql     ; then dbc_dbtypes="${dbc_dbtypes}mysql, "; fi
        if echo "$DB_INSTALLED" | grep -q sqlite3   ; then dbc_dbtypes="${dbc_dbtypes}sqlite3, "; fi
        # remove trailing ,
        dbc_dbtypes=`echo ${dbc_dbtypes} | sed 's/, *$//'`

        # action
        if [ $# -gt 0 ]; then
            param1="$1"
            shift
        fi
        # $2: when action is "configure": most-recently-configured-version
        if [ $# -gt 0 ]; then
            param2="$1"
            param2_orig=$param2
            shift
        fi

        # When upgrading from an older version (param2),
        # do not pass the version number of the old package.
        # Instead we pass the database version number of the old package.
        if [ "$param2" ]; then
            case "$param1" in
                configure|reconfigure)
                    param2=`get_database_version_by_release "$param2"`

                    # dbconfig is available since Bareos version >= 14.1.0.
                    if dpkg --compare-versions "$param2_orig" lt "14.1.0"; then
                        bareos_migrate_to_dbconfig="yes"
                        dbc_first_version="2003"
                        dbc_load_include="sh:/usr/lib/bareos/scripts/set_dbconfig_vars.sh"
                        # empty passwords require special treatment, see below
                        bareos_database_password=`get_database_password` || true
                        # if password is given, set authmethod to password,
                        # otherwise postgresql configuration will stay at default "ident" method.
                        if [ "${bareos_database_password}" ]; then
                            dbc_authmethod_user="password"
                        fi
                    fi
                    ;;
                *)
                    ;;
            esac
        fi

        dbc_go bareos-database-common $param1 $param2 $@

        if [ "$bareos_migrate_to_dbconfig" = "yes" ]; then
            # TODO: check if settings app-pass to "" is really required.
            #       Or is it only required for "DEBIAN_FRONTEND=noninteractive" ?
            case "`get_database_driver`" in
                postgresql)
                    if [ -z "${bareos_database_password}" ]; then
                        #db_set bareos-database-common/pgsql/authmethod-user "ident"
                        # workaround: if an empty database password is defined, explicitly set it
                        db_set bareos-database-common/pgsql/app-pass ""
                    fi
                    ;;
                mysql)
                    if [ -z "${bareos_database_password}" ]; then
                        # workaround: if an empty mysql password is defined, explicitly set it
                        db_set bareos-database-common/mysql/app-pass ""
                    fi
                    ;;
                sqlite3)
                    # dbconfig expects sqlite files as "dbname.db"
                    # while Bareos expects them as "dbname".
                    # A link is created, so that both names matches.
                    if [ -e "${dbc_basepath}/${dbc_dbname}.db" ]; then
                        if ! [ -e "${dbc_basepath}/${dbc_dbname}" ]; then
                            ln -s "${dbc_basepath}/${dbc_dbname}.db" "${dbc_basepath}/${dbc_dbname}"
                        fi
                    fi
                    ;;
            esac
        fi
    fi
fi